EP 0274429 A2 19880713 - Method of kaolin aggregation using combination of organic and inorganic bases.
Title (en)
Method of kaolin aggregation using combination of organic and inorganic bases.
Title (de)
Verfahren zur Erzeugung einer Kaolinmischung mit Hilfe einer Zusammensetzung von organischen und anorganischen Basen.
Title (fr)
Procédé pour agréger du kaolin utilisant une combinaison de bases organiques et inorganiques.
Publication
Application
Priority
- US 188987 A 19870109
- US 4321487 A 19870427
Abstract (en)
The invention relates to an aggregated kaolinitic pigment having improved physical and optical characteristics when incorporated as a filler or coating pigment in paper. The pigment may be produced by treating a particulate kaolin with an alkaline earth metal carbonate or hydroxide or alkali metal carbonate, and urea or an organic amine. The pigment consists of porous aggregates of kaolin particles.
IPC 1-7
IPC 8 full level
C09C 1/42 (2006.01); D21H 17/69 (2006.01); D21H 19/40 (2006.01)
CPC (source: EP US)
C09C 1/42 (2013.01 - EP US); D21H 17/69 (2013.01 - EP US); D21H 19/40 (2013.01 - EP US); C01P 2004/20 (2013.01 - EP US); C01P 2004/32 (2013.01 - EP US); C01P 2004/50 (2013.01 - EP US); C01P 2004/51 (2013.01 - EP US); C01P 2004/52 (2013.01 - EP US); C01P 2004/61 (2013.01 - EP US); C01P 2004/62 (2013.01 - EP US); C01P 2004/80 (2013.01 - EP US); C01P 2006/14 (2013.01 - EP US); C01P 2006/19 (2013.01 - EP US); C01P 2006/21 (2013.01 - EP US); C01P 2006/60 (2013.01 - EP US); C01P 2006/80 (2013.01 - EP US); C01P 2006/82 (2013.01 - EP US); C01P 2006/90 (2013.01 - EP US); Y10T 428/31993 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0274429 A2 19880713; EP 0274429 A3 19881117; AU 8188787 A 19880714; BR 8800028 A 19880802; NZ 222712 A 19891128; PT 86511 A 19880201; PT 86511 B 19911231; US 4806167 A 19890221
DOCDB simple family (application)
EP 88300080 A 19880107; AU 8188787 A 19871127; BR 8800028 A 19880106; NZ 22271287 A 19871127; PT 8651188 A 19880108; US 4321487 A 19870427